Final answer:
The correct answer is option FM 7-22. This manual provides detailed instructions and illustrations for proper warm-up techniques to prevent injuries and prepare soldiers for physical activity.
Step-by-step explanation:
The correct answer is option FM 7-22. The FM stands for Field Manual, which is a document used by the military to provide information and guidance on various topics.
FM 7-22 specifically covers the Army Physical Readiness Training program, which includes warm-up exercises that soldiers are required to perform prior to the start of the ACFT (Army Combat Fitness Test).
This manual provides detailed instructions and illustrations for proper warm-up techniques to prevent injuries and prepare soldiers for physical activity.
The correct answer is option: the time for one complete cycle of 400-Hz AC power used in military aircraft is 0.0025 seconds. To calculate this, you use the formula for the period of a cycle, which is T = 1/f, where T is the period and f is the frequency.
Since the frequency is given as 400 Hz, which means 400 cycles per second, you would calculate the period by taking the reciprocal of the frequency:
T = 1/f = 1/400
The result is T = 0.0025 seconds. This means that each cycle lasts for 0.0025 seconds in a 400 Hz AC power system. The ability to design lightweight equipment is an advantage of a higher frequency power system, such as the 400-Hz system used in military aircraft.